/*
 * Copyright (c) 1999 World Wide Web Consortium,
 * (Massachusetts Institute of Technology, Institut National de Recherche
 *  en Informatique et en Automatique, Keio University).
 * All Rights Reserved. http://www.w3.org/Consortium/Legal/
 */
using System;
using org.w3c.dom.stylesheets;

namespace org.w3c.dom.css
{

    /**
     *  The <code>CSSStyleSheet</code> interface is a concrete interface used to 
     * represent a CSS style sheet i.e. a style sheet whose content type is 
     * "text/css". 
     * @since DOM Level 2
     */
    public interface CSSStyleSheet : StyleSheet
    {
        /**
         *  If this style sheet comes from an <code>@import</code> rule, the 
         * <code>ownerRule</code> attribute will contain the 
         * <code>CSSImportRule</code>. In that case, the <code>ownerNode</code> 
         * attribute in the <code>StyleSheet</code> interface will be 
         * <code>null</code>. If the style sheet comes from an element or a 
         * processing instruction, the <code>ownerRule</code> attribute will be 
         * <code>null</code> and the <code>ownerNode</code> attribute will contain  
         * the <code>Node</code>. 
         */
        CSSRule getOwnerRule();
        /**
         *  The list of all CSS rules contained within the style sheet. This 
         * includes both rule sets and  at-rules. 
         */
        CSSRuleList getCssRules();
        /**
         *  Used to insert a new rule into the style sheet. The new rule now becomes 
         * part of the cascade. 
         * @param rule  The parsable text representing the rule. For rule sets this 
         *   contains both the selector and the style declaration. For at-rules, 
         *   this specifies both the at-identifier and the rule content. 
         * @param index   The index within the style sheet's rule list of the rule  
         *   before which to insert the specified rule. If the  specified index is 
         *   equal to the length of the style sheet's rule collection, the rule 
         *   will be added to the end of the style sheet. 
         * @return  The index within the style sheet's rule collection of the newly 
         *   inserted rule. 
         * @exception DOMException
         *   HIERARCHY_REQUEST_ERR: Raised if the rule cannot be inserted at the 
         *   specified index e.g. if an <code>@import</code> rule is inserted after 
         *   a standard rule set or other at-rule.
         *   <br>INDEX_SIZE_ERR: Raised if the specified index is not a valid 
         *   insertion point.
         *   <br>NO_MODIFICATION_ALLOWED_ERR: Raised if this style sheet is 
         *   readonly.
         * @exception CSSException
         *   SYNTAX_ERR: Raised if the specified rule has a syntax error  and is 
         *   unparsable.
         */
        int insertRule(String rule,
                                            int index)
                                           ;//throws DOMException, CSSException;
        /**
         *  Used to delete a rule from the style sheet. 
         * @param index  The index within the style sheet's rule list of the rule to 
         *   remove. 
         * @exception DOMException
         *   INDEX_SIZE_ERR: Raised if the specified index does not correspond to a 
         *   rule in the style sheet's rule list.
         *   <br>NO_MODIFICATION_ALLOWED_ERR: Raised if this style sheet is 
         *   readonly.
         */
        void deleteRule(int index)
                                           ;//throws DOMException;
    }

}